Mercurial > libervia-backend
annotate libervia/backend/plugins/plugin_xep_0313.py @ 4230:314d3c02bb67
core (xmpp): Add a timeout for messages processing to avoid blocking the queue.
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sat, 06 Apr 2024 12:21:04 +0200 |
| parents | 1c30d574df2b |
| children | 0d7bb4df2343 |
| rev | line source |
|---|---|
| 3028 | 1 #!/usr/bin/env python3 |
| 3137 | 2 |
| 1277 | 3 |
| 4 # SAT plugin for Message Archive Management (XEP-0313) | |
| 3479 | 5 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org) |
| 1766 | 6 # Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org) |
| 1277 | 7 |
| 8 # This program is free software: you can redistribute it and/or modify | |
| 9 # it under the terms of the GNU Affero General Public License as published by | |
| 10 # the Free Software Foundation, either version 3 of the License, or | |
| 11 # (at your option) any later version. | |
| 12 | |
| 13 # This program is distributed in the hope that it will be useful, | |
| 14 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 # GNU Affero General Public License for more details. | |
| 17 | |
| 18 # You should have received a copy of the GNU Affero General Public License | |
| 19 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 | |
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21 from datetime import datetime |
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22 import uuid |
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23 |
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24 from dateutil import tz |
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25 from twisted.internet import defer |
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26 from twisted.words.protocols.jabber import jid |
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27 from twisted.words.protocols.jabber.error import StanzaError |
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28 from wokkel import disco |
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29 from wokkel import data_form |
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30 from wokkel import rsm |
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31 from wokkel import mam |
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32 from zope.interface import implementer |
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33 |
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34 from libervia.backend.core import exceptions |
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35 from libervia.backend.core.constants import Const as C |
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36 from libervia.backend.core.i18n import _ |
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37 from libervia.backend.core.log import getLogger |
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38 from libervia.backend.tools import xml_tools |
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39 from libervia.backend.tools.common import data_format |
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40 |
| 1277 | 41 |
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42 log = getLogger(__name__) |
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43 |
| 1277 | 44 PLUGIN_INFO = { |
| 3028 | 45 C.PI_NAME: "Message Archive Management", |
| 46 C.PI_IMPORT_NAME: "XEP-0313", | |
| 47 C.PI_TYPE: "XEP", | |
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48 # XEP-0431 only defines a namespace, so we register it here |
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49 C.PI_PROTOCOLS: ["XEP-0313", "XEP-0431"], |
| 3028 | 50 C.PI_DEPENDENCIES: ["XEP-0059", "XEP-0359"], |
| 51 C.PI_MAIN: "XEP_0313", | |
| 52 C.PI_HANDLER: "yes", | |
| 53 C.PI_DESCRIPTION: _("""Implementation of Message Archive Management"""), | |
| 1277 | 54 } |
| 55 | |
| 3028 | 56 MAM_PREFIX = "mam_" |
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57 FILTER_PREFIX = MAM_PREFIX + "filter_" |
| 3028 | 58 KEY_LAST_STANZA_ID = "last_stanza_id" |
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59 MESSAGE_RESULT = "/message/result[@xmlns='{mam_ns}' and @queryid='{query_id}']" |
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60 MESSAGE_STANZA_ID = '/message/stanza-id[@xmlns="{ns_stanza_id}"]' |
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61 NS_FTS = "urn:xmpp:fulltext:0" |
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62 |
| 1277 | 63 |
| 64 class XEP_0313(object): | |
| 65 def __init__(self, host): | |
| 66 log.info(_("Message Archive Management plugin initialization")) | |
| 67 self.host = host | |
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68 self.host.register_namespace("mam", mam.NS_MAM) |
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69 host.register_namespace("fulltextmam", NS_FTS) |
| 3028 | 70 self._rsm = host.plugins["XEP-0059"] |
| 71 self._sid = host.plugins["XEP-0359"] | |
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72 # Deferred used to store last stanza id in order of reception |
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73 self._last_stanza_id_d = defer.Deferred() |
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74 self._last_stanza_id_d.callback(None) |
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75 host.bridge.add_method( |
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76 "mam_get", ".plugin", in_sign='sss', |
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77 out_sign='(a(sdssa{ss}a{ss}ss)ss)', method=self._get_archives, |
| 3028 | 78 async_=True) |
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79 |
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80 async def resume(self, client): |
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81 """Retrieve one2one messages received since the last we have in local storage""" |
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82 stanza_id_data = await self.host.memory.storage.get_privates( |
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83 mam.NS_MAM, [KEY_LAST_STANZA_ID], profile=client.profile) |
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84 stanza_id = stanza_id_data.get(KEY_LAST_STANZA_ID) |
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85 rsm_req = None |
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86 if stanza_id is None: |
| 3028 | 87 log.info("can't retrieve last stanza ID, checking history") |
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88 last_mess = await self.host.memory.history_get( |
| 3028 | 89 None, None, limit=1, filters={'not_types': C.MESS_TYPE_GROUPCHAT, |
| 90 'last_stanza_id': True}, | |
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91 profile=client.profile) |
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92 if not last_mess: |
| 3028 | 93 log.info(_("It seems that we have no MAM history yet")) |
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94 stanza_id = None |
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95 rsm_req = rsm.RSMRequest(max_=50, before="") |
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96 else: |
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97 stanza_id = last_mess[0][-1]['stanza_id'] |
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98 if rsm_req is None: |
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99 rsm_req = rsm.RSMRequest(max_=100, after=stanza_id) |
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100 mam_req = mam.MAMRequest(rsm_=rsm_req) |
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101 complete = False |
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102 count = 0 |
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103 while not complete: |
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104 try: |
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105 mam_data = await self.get_archives(client, mam_req, |
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106 service=client.jid.userhostJID()) |
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107 except StanzaError as e: |
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108 log.warning( |
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109 f"Can't retrieve MAM archives: {e}\n" |
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110 f"{xml_tools.pp_elt(mam_req.toElement())}\n" |
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111 f"{xml_tools.pp_elt(e.stanza)}" |
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112 ) |
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113 return |
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114 except Exception as e: |
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115 log.exception( |
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116 f"Can't retrieve retrieve MAM archive" |
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117 ) |
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118 return |
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119 elt_list, rsm_response, mam_response = mam_data |
| 3028 | 120 complete = mam_response["complete"] |
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121 # we update MAM request for next iteration |
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122 mam_req.rsm.after = rsm_response.last |
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123 # before may be set if we had no previous history |
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124 mam_req.rsm.before = None |
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125 if not elt_list: |
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126 break |
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127 else: |
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128 count += len(elt_list) |
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129 |
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130 for idx, mess_elt in enumerate(elt_list): |
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131 try: |
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132 fwd_message_elt = self.get_message_from_result( |
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133 client, mess_elt, mam_req) |
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134 except exceptions.DataError: |
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135 continue |
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136 |
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137 try: |
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138 destinee = jid.JID(fwd_message_elt['to']) |
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139 except KeyError: |
| 3028 | 140 log.warning(_('missing "to" attribute in forwarded message')) |
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141 destinee = client.jid |
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142 if destinee.userhostJID() == client.jid.userhostJID(): |
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143 # message to use, we insert the forwarded message in the normal |
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144 # workflow |
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145 client.xmlstream.dispatch(fwd_message_elt) |
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146 else: |
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147 # this message should be from us, we just add it to history |
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148 try: |
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149 from_jid = jid.JID(fwd_message_elt['from']) |
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150 except KeyError: |
| 3028 | 151 log.warning(_('missing "from" attribute in forwarded message')) |
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152 from_jid = client.jid |
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153 if from_jid.userhostJID() != client.jid.userhostJID(): |
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154 log.warning(_( |
| 3028 | 155 'was expecting a message sent by our jid, but this one if ' |
| 156 'from {from_jid}, ignoring\n{xml}').format( | |
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157 from_jid=from_jid.full(), xml=mess_elt.toXml())) |
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158 continue |
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159 # adding message to history |
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160 mess_data = client.messageProt.parse_message(fwd_message_elt) |
|
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161 try: |
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162 await client.messageProt.add_to_history(mess_data) |
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163 except exceptions.CancelError as e: |
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164 log.warning( |
| 3028 | 165 "message has not been added to history: {e}".format(e=e)) |
|
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166 except Exception as e: |
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167 log.error( |
| 3028 | 168 "can't add message to history: {e}\n{xml}" |
|
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169 .format(e=e, xml=mess_elt.toXml())) |
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170 if complete and idx == len(elt_list) - 1: |
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171 # We are at the last message from archive, we store the ID to not |
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172 # ask again the same messages next time. |
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173 try: |
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174 stanza_id = mess_elt.result["id"] |
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175 await self.host.memory.storage.set_private_value( |
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176 namespace=mam.NS_MAM, |
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177 key=KEY_LAST_STANZA_ID, |
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178 value=stanza_id, |
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179 profile=client.profile |
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180 ) |
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181 except Exception: |
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182 log.exception("Can't store last stanza ID") |
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183 |
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184 if not count: |
| 3028 | 185 log.info(_("We have received no message while offline")) |
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186 else: |
| 3028 | 187 log.info(_("We have received {num_mess} message(s) while offline.") |
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188 .format(num_mess=count)) |
| 1277 | 189 |
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190 def profile_connected(self, client): |
|
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191 defer.ensureDeferred(self.resume(client)) |
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192 |
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193 def get_handler(self, client): |
|
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194 mam_client = client._mam = LiberviaMAMClient(self) |
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195 return mam_client |
| 1277 | 196 |
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197 def parse_extra(self, extra, with_rsm=True): |
|
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198 """Parse extra dictionnary to retrieve MAM arguments |
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199 |
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200 @param extra(dict): data for parse |
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201 @param with_rsm(bool): if True, RSM data will be parsed too |
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202 @return (data_form, None): request with parsed arguments |
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203 or None if no MAM arguments have been found |
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204 """ |
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205 mam_args = {} |
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206 form_args = {} |
| 3028 | 207 for arg in ("start", "end"): |
|
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208 try: |
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209 value = extra.pop(MAM_PREFIX + arg) |
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210 form_args[arg] = datetime.fromtimestamp(float(value), tz.tzutc()) |
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211 except (TypeError, ValueError): |
| 3028 | 212 log.warning("Bad value for {arg} filter ({value}), ignoring".format( |
|
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213 arg=arg, value=value)) |
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214 except KeyError: |
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215 continue |
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216 |
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217 try: |
| 3028 | 218 form_args["with_jid"] = jid.JID(extra.pop( |
| 219 MAM_PREFIX + "with")) | |
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220 except (jid.InvalidFormat): |
| 3028 | 221 log.warning("Bad value for jid filter") |
|
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222 except KeyError: |
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223 pass |
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224 |
| 3028 | 225 for name, value in extra.items(): |
|
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226 if name.startswith(FILTER_PREFIX): |
| 2763 | 227 var = name[len(FILTER_PREFIX):] |
| 3028 | 228 extra_fields = form_args.setdefault("extra_fields", []) |
|
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229 extra_fields.append(data_form.Field(var=var, value=value)) |
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230 |
| 3028 | 231 for arg in ("node", "query_id"): |
|
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232 try: |
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233 value = extra.pop(MAM_PREFIX + arg) |
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234 mam_args[arg] = value |
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235 except KeyError: |
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236 continue |
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237 |
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238 if with_rsm: |
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239 rsm_request = self._rsm.parse_extra(extra) |
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240 if rsm_request is not None: |
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241 mam_args["rsm_"] = rsm_request |
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242 |
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243 if form_args: |
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244 mam_args["form"] = mam.buildForm(**form_args) |
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245 |
|
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246 # we only set orderBy if we have other MAM args |
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247 # else we would make a MAM query while it's not expected |
| 3028 | 248 if "order_by" in extra and mam_args: |
| 249 order_by = extra.pop("order_by") | |
|
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250 assert isinstance(order_by, list) |
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251 mam_args["orderBy"] = order_by |
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252 |
|
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253 return mam.MAMRequest(**mam_args) if mam_args else None |
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254 |
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255 def get_message_from_result(self, client, mess_elt, mam_req, service=None): |
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256 """Extract usable <message/> from MAM query result |
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257 |
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258 The message will be validated, and stanza-id/delay will be added if necessary. |
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259 @param mess_elt(domish.Element): result <message/> element wrapping the message |
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260 to retrieve |
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261 @param mam_req(mam.MAMRequest): request used (needed to get query_id) |
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262 @param service(jid.JID, None): MAM service where the request has been sent |
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263 None if it's user server |
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264 @return domish.Element): <message/> that can be used directly with onMessage |
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265 """ |
| 3028 | 266 if mess_elt.name != "message": |
| 267 log.warning("unexpected stanza in archive: {xml}".format( | |
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268 xml=mess_elt.toXml())) |
| 3028 | 269 raise exceptions.DataError("Invalid element") |
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270 service_jid = client.jid.userhostJID() if service is None else service |
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271 mess_from = mess_elt.getAttribute("from") or client.jid.userhost() |
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272 # we check that the message has been sent by the right service |
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273 # if service is None (i.e. message expected from our own server) |
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274 # from can be server jid or user's bare jid |
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275 if (mess_from != service_jid.full() |
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276 and not (service is None and mess_from == client.jid.host)): |
| 3028 | 277 log.error("Message is not from our server, something went wrong: " |
| 278 "{xml}".format(xml=mess_elt.toXml())) | |
| 279 raise exceptions.DataError("Invalid element") | |
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280 try: |
| 3028 | 281 result_elt = next(mess_elt.elements(mam.NS_MAM, "result")) |
| 282 forwarded_elt = next(result_elt.elements(C.NS_FORWARD, "forwarded")) | |
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283 try: |
| 3028 | 284 delay_elt = next(forwarded_elt.elements(C.NS_DELAY, "delay")) |
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285 except StopIteration: |
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286 # delay_elt is not mandatory |
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287 delay_elt = None |
| 3028 | 288 fwd_message_elt = next(forwarded_elt.elements(C.NS_CLIENT, "message")) |
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289 except StopIteration: |
| 3028 | 290 log.warning("Invalid message received from MAM: {xml}".format( |
|
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291 xml=mess_elt.toXml())) |
| 3028 | 292 raise exceptions.DataError("Invalid element") |
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293 else: |
| 3028 | 294 if not result_elt["queryid"] == mam_req.query_id: |
| 295 log.error("Unexpected query id (was expecting {query_id}): {xml}" | |
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296 .format(query_id=mam.query_id, xml=mess_elt.toXml())) |
| 3028 | 297 raise exceptions.DataError("Invalid element") |
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298 stanza_id = self._sid.get_stanza_id(fwd_message_elt, |
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299 service_jid) |
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300 if stanza_id is None: |
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301 # not stanza-id element is present, we add one so message |
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302 # will be archived with it, and we won't request several times |
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303 # the same MAM achive |
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304 try: |
| 3028 | 305 stanza_id = result_elt["id"] |
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306 except AttributeError: |
| 3028 | 307 log.warning('Invalid MAM result: missing "id" attribute: {xml}' |
|
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308 .format(xml=result_elt.toXml())) |
| 3028 | 309 raise exceptions.DataError("Invalid element") |
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310 self._sid.add_stanza_id(client, fwd_message_elt, stanza_id, by=service_jid) |
|
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311 |
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312 if delay_elt is not None: |
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313 fwd_message_elt.addChild(delay_elt) |
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314 |
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315 return fwd_message_elt |
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316 |
|
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317 def queryFields(self, client, service=None): |
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318 """Ask the server about supported fields. |
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319 |
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320 @param service: entity offering the MAM service (None for user archives) |
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321 @return (D(data_form.Form)): form with the implemented fields (cf XEP-0313 §4.1.5) |
| 1277 | 322 """ |
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323 return client._mam.queryFields(service) |
| 1277 | 324 |
|
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325 def queryArchive(self, client, mam_req, service=None): |
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326 """Query a user, MUC or pubsub archive. |
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327 |
|
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328 @param mam_req(mam.MAMRequest): MAM query instance |
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329 @param service(jid.JID, None): entity offering the MAM service |
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330 None for user server |
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331 @return (D(domish.Element)): <IQ/> result |
| 1277 | 332 """ |
|
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333 return client._mam.queryArchive(mam_req, service) |
|
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334 |
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335 def _append_message(self, elt_list, message_cb, message_elt): |
|
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336 if message_cb is not None: |
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337 elt_list.append(message_cb(message_elt)) |
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338 else: |
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339 elt_list.append(message_elt) |
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340 |
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341 def _query_finished(self, iq_result, client, elt_list, event): |
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342 client.xmlstream.removeObserver(event, self._append_message) |
|
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343 try: |
| 3028 | 344 fin_elt = next(iq_result.elements(mam.NS_MAM, "fin")) |
|
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345 except StopIteration: |
| 3028 | 346 raise exceptions.DataError("Invalid MAM result") |
| 1277 | 347 |
| 3028 | 348 mam_response = {"complete": C.bool(fin_elt.getAttribute("complete", C.BOOL_FALSE)), |
| 349 "stable": C.bool(fin_elt.getAttribute("stable", C.BOOL_TRUE))} | |
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350 |
|
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351 try: |
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352 rsm_response = rsm.RSMResponse.fromElement(fin_elt) |
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353 except rsm.RSMNotFoundError: |
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354 rsm_response = None |
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355 |
|
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356 return (elt_list, rsm_response, mam_response) |
|
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357 |
|
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358 def serialize_archive_result(self, data, client, mam_req, service): |
|
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359 elt_list, rsm_response, mam_response = data |
|
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360 mess_list = [] |
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361 for elt in elt_list: |
|
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362 fwd_message_elt = self.get_message_from_result(client, elt, mam_req, |
|
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363 service=service) |
|
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364 mess_data = client.messageProt.parse_message(fwd_message_elt) |
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|
365 mess_list.append(client.message_get_bridge_args(mess_data)) |
|
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366 metadata = { |
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367 'rsm': self._rsm.response2dict(rsm_response), |
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368 'mam': mam_response |
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|
369 } |
|
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370 return mess_list, data_format.serialise(metadata), client.profile |
|
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371 |
|
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372 def _get_archives(self, service, extra_ser, profile_key): |
|
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373 """ |
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374 @return: tuple with: |
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375 - list of message with same data as in bridge.message_new |
|
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376 - response metadata with: |
|
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377 - rsm data (first, last, count, index) |
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378 - mam data (complete, stable) |
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379 - profile |
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380 """ |
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381 client = self.host.get_client(profile_key) |
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382 service = jid.JID(service) if service else None |
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383 extra = data_format.deserialise(extra_ser, {}) |
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384 mam_req = self.parse_extra(extra) |
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385 |
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386 d = self.get_archives(client, mam_req, service=service) |
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387 d.addCallback(self.serialize_archive_result, client, mam_req, service) |
|
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388 return d |
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389 |
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390 def get_archives(self, client, query, service=None, message_cb=None): |
|
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391 """Query archive and gather page result |
| 1277 | 392 |
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393 @param query(mam.MAMRequest): MAM request |
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394 @param service(jid.JID, None): MAM service to use |
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395 None to use our own server |
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396 @param message_cb(callable, None): callback to use on each message |
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397 this method can be used to unwrap messages |
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398 @return (tuple[list[domish.Element], rsm.RSMResponse, dict): result data with: |
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399 - list of found elements |
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400 - RSM response |
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401 - MAM response, which is a dict with following value: |
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402 - complete: a boolean which is True if all items have been received |
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403 - stable: a boolean which is False if items order may be changed |
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404 """ |
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405 if query.query_id is None: |
| 3028 | 406 query.query_id = str(uuid.uuid4()) |
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407 elt_list = [] |
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408 event = MESSAGE_RESULT.format(mam_ns=mam.NS_MAM, query_id=query.query_id) |
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409 client.xmlstream.addObserver(event, self._append_message, 0, elt_list, message_cb) |
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410 d = self.queryArchive(client, query, service) |
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411 d.addCallback(self._query_finished, client, elt_list, event) |
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412 return d |
|
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413 |
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414 def get_prefs(self, client, service=None): |
| 1277 | 415 """Retrieve the current user preferences. |
| 416 | |
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417 @param service: entity offering the MAM service (None for user archives) |
| 1277 | 418 @return: the server response as a Deferred domish.Element |
| 419 """ | |
| 420 # http://xmpp.org/extensions/xep-0313.html#prefs | |
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421 return client._mam.queryPrefs(service) |
| 1277 | 422 |
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423 def _set_prefs(self, service_s=None, default="roster", always=None, never=None, |
|
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424 profile_key=C.PROF_KEY_NONE): |
|
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425 service = jid.JID(service_s) if service_s else None |
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426 always_jid = [jid.JID(entity) for entity in always] |
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427 never_jid = [jid.JID(entity) for entity in never] |
|
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428 # TODO: why not build here a MAMPrefs object instead of passing the args separately? |
|
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429 return self.setPrefs(service, default, always_jid, never_jid, profile_key) |
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430 |
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431 def setPrefs(self, client, service=None, default="roster", always=None, never=None): |
| 1277 | 432 """Set news user preferences. |
| 433 | |
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434 @param service: entity offering the MAM service (None for user archives) |
| 1277 | 435 @param default (unicode): a value in ('always', 'never', 'roster') |
| 436 @param always (list): a list of JID instances | |
| 437 @param never (list): a list of JID instances | |
| 438 @param profile_key (unicode): %(doc_profile_key)s | |
| 439 @return: the server response as a Deferred domish.Element | |
| 440 """ | |
| 441 # http://xmpp.org/extensions/xep-0313.html#prefs | |
|
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442 return client._mam.setPrefs(service, default, always, never) |
| 1277 | 443 |
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444 def on_message_stanza_id(self, message_elt, client): |
|
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445 """Called when a message with a stanza-id is received |
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446 |
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447 the messages' stanza ids are stored when received, so the last one can be used |
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448 to retrieve missing history on next connection |
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449 @param message_elt(domish.Element): <message> with a stanza-id |
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450 """ |
|
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451 if message_elt.getAttribute("type") == C.MESS_TYPE_GROUPCHAT: |
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452 # groupchat message MAM is handled by XEP-0045 |
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453 return |
|
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454 service_jid = client.jid.userhostJID() |
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455 stanza_id = self._sid.get_stanza_id(message_elt, service_jid) |
|
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|
456 if stanza_id is None: |
| 3028 | 457 log.debug("Ignoring <message>, stanza id is not from our server") |
|
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458 else: |
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459 # we use self._last_stanza_id_d do be sure that last_stanza_id is stored in |
|
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|
460 # the order of reception |
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461 self._last_stanza_id_d.addCallback( |
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462 lambda __: self.host.memory.storage.set_private_value( |
|
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463 namespace=mam.NS_MAM, |
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464 key=KEY_LAST_STANZA_ID, |
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465 value=stanza_id, |
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466 profile=client.profile)) |
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|
467 |
| 1277 | 468 |
| 3028 | 469 @implementer(disco.IDisco) |
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470 class LiberviaMAMClient(mam.MAMClient): |
| 1277 | 471 |
|
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472 def __init__(self, plugin_parent): |
|
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473 self.plugin_parent = plugin_parent |
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|
474 |
|
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|
475 @property |
|
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|
476 def host(self): |
|
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477 return self.parent.host_app |
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|
478 |
|
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|
479 def connectionInitialized(self): |
|
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|
480 observer_xpath = MESSAGE_STANZA_ID.format( |
| 3028 | 481 ns_stanza_id=self.host.ns_map['stanza_id']) |
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482 self.xmlstream.addObserver( |
|
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|
483 observer_xpath, self.plugin_parent.on_message_stanza_id, client=self.parent |
|
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|
484 ) |
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|
485 |
|
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|
486 def getDiscoInfo(self, requestor, target, nodeIdentifier=""): |
|
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|
487 return [disco.DiscoFeature(mam.NS_MAM)] |
| 1277 | 488 |
|
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489 def getDiscoItems(self, requestor, target, nodeIdentifier=""): |
| 1277 | 490 return [] |